EP3209526B1 - Device for fixing oscillatable a gas generator as a vibration damper mass within an airbag module - Google Patents

Device for fixing oscillatable a gas generator as a vibration damper mass within an airbag module Download PDF

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Publication number
EP3209526B1
EP3209526B1 EP15788323.2A EP15788323A EP3209526B1 EP 3209526 B1 EP3209526 B1 EP 3209526B1 EP 15788323 A EP15788323 A EP 15788323A EP 3209526 B1 EP3209526 B1 EP 3209526B1
Authority
EP
European Patent Office
Prior art keywords
gas generator
ring
flange
fastening
elastic section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15788323.2A
Other languages
German (de)
French (fr)
Other versions
EP3209526A1 (en
Inventor
Constantin VON RODEN
Gregor Eck
Holger Oechel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Automotive Safety Systems Germany GmbH
Original Assignee
TRW Automotive Safety Systems GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TRW Automotive Safety Systems GmbH filed Critical TRW Automotive Safety Systems GmbH
Priority to EP18195612.9A priority Critical patent/EP3483011B1/en
Publication of EP3209526A1 publication Critical patent/EP3209526A1/en
Application granted granted Critical
Publication of EP3209526B1 publication Critical patent/EP3209526B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/217—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/203—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns
    • B60R21/2035—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit
    • B60R21/2037—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit the module or a major component thereof being yieldably mounted, e.g. for actuating the horn switch or for protecting the driver in a non-deployment situation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/261—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means other than bag structure to diffuse or guide inflation fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/268—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous release of stored pressurised gas
    • B60R21/272—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous release of stored pressurised gas with means for increasing the pressure of the gas just before or during liberation, e.g. hybrid inflators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/217—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
    • B60R2021/2173—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together the module or part thereof being movably mounted on the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/268—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous release of stored pressurised gas
    • B60R21/272—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous release of stored pressurised gas with means for increasing the pressure of the gas just before or during liberation, e.g. hybrid inflators
    • B60R2021/2725—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous release of stored pressurised gas with means for increasing the pressure of the gas just before or during liberation, e.g. hybrid inflators using a fluid fuel gas generator

Definitions

  • the invention relates to a device for vibratory attachment of a gas generator as a vibration damper mass within an airbag module, an airbag module, a vehicle occupant safety system, a method for producing a device for swingably mounting a gas generator as a vibration damper mass within an airbag module and a method for producing an airbag module.
  • mounting feet are molded onto the holding part, which consist of an elastic material and are fastened to a generator carrier.
  • the abutment lip integrally merges into the respective mounting foot and so one-piece circumferentially closed rotates (ie also forms a ring in which the holding part is added).
  • a gas bag module comprising a plurality of components, which comprise at least one carrier element, a gas generator and a gas bag, wherein at least one of the components by means of at least one elastic, made of silicone element is mounted vibrationally decoupled in the gas bag module.
  • the object of the present invention is to propose a device for vibratory attachment of a gas generator as a vibration damper mass within an airbag module, which overcomes the disadvantages mentioned above.
  • a device for vibratory mounting of a gas generator is to be proposed as a vibration damper mass, which is simple and inexpensive to produce.
  • an airbag module is to be proposed that can be inexpensively manufactured and assembled with relatively little effort.
  • a corresponding vehicle occupant safety system to be proposed.
  • a method for producing a device for vibratory mounting of a gas generator as a vibration damper mass within an airbag module and a method for producing an airbag module are proposed, wherein the production should be possible easily and at relatively low cost.
  • this object is achieved with regard to the device for vibratory mounting by the subject of claim 1, with regard to the airbag module by the subject matter of claim 9, with regard to the vehicle occupant safety system by the subject matter of claim 12, in terms of the method for the production of a device for the swingable attachment of a gas generator by the objects according to claim 13 as well as with regard to the method for producing an airbag module by the object according to claim 15.
  • a device for swingably mounting a gas generator as a vibration damper mass within an airbag module wherein a fastening ring is provided for attachment of the gas generator, wherein the fastening ring at least one elastic portion and a reinforcing insert for reinforcing the mounting ring and fixing the mounting ring on the gas generator has, wherein the reinforcing insert at least partially formed of plastic.
  • a reinforcing insert is provided with a metal core, which (at least in sections) coated with plastic, in particular overmolded.
  • a reinforcing insert is proposed, which is formed completely from (optionally fiber-reinforced) plastic.
  • a surface of the reinforcing insert is at least partly made of plastic.
  • a complex cleaning of the surface of the metal part can be omitted since the elastic portion adheres comparatively well to the plastic surface.
  • the entire surface of the reinforcing insert or at least the entire surface of the reinforcing insert, which is in (immediate) contact with the elastic portion formed of plastic.
  • this (possibly integrally molded) fasteners such as plastically deformable sections (for example, a crimp connection) or locking devices for realizing a snap-in connection or snap connection.
  • the reinforcing insert is formed by an open reinforcing ring, and the elastic portion by a closed ring, in which the reinforcing insert is received.
  • a key idea here is to form an open reinforcing ring, which cooperates with an elastic, closed ring.
  • the elastic portion can be used to stabilize the basically open reinforcing ring.
  • adhesion between these two elements is improved by the interaction of elastic portion and open reinforcing ring, so that a complex cleaning of the reinforcing ring, if it is formed of metal, can be omitted or at least carried out with less effort.
  • plastic in particular polymeric materials, such as polyolefin, preferably polyethylene and / or polypropylene and / or polyamide and / or polyvinyl chloride and / or polystyrene and / or polyurethane and / or polyethylene terephthalate.
  • the plastics mentioned may be fiber-reinforced, for example by carbon fiber and / or glass fiber.
  • An elastic modulus of the plastic is preferably at least 2 GPa, preferably at least 5 GPa, more preferably at least 10 GPa, even more preferably at least 50 GPa.
  • An elastic section is preferably made of a material whose modulus of elasticity is less than 1 GPa, preferably less than 0.5 GPa, more preferably less than 0.1 GPa. Should the elastic portion be made of several materials, it is preferred that the material be with the highest modulus of elasticity below the values just mentioned.
  • the elastic portion of an elastomer, in particular silicone and / or rubber be formed or include such materials.
  • the fastening ring has at least one elastic portion and a reinforcing member for reinforcing the fastening ring and fixation of the mounting ring on the gas generator, wherein the reinforcing member at least partially surrounds the elastic portion such that the elastic portion can be held on the gas generator.
  • a key idea here is to provide a reinforcing member that not only serves to reinforce the mounting ring and, if necessary. For attachment to a flange of the gas generator, but is also arranged so that the elastic portion of the gas generator (or between the reinforcing member and gas generator ) is held.
  • the reinforcing member may be formed of metal or plastic (or include such materials).
  • the reinforcing member may be provided as a separate member which is assembled with the elastic portion and the inflator such that the elastic portion is held between the reinforcing member and the inflator.
  • the reinforcing member may be folded over the elastic portion and the flange of the gas generator (after the insertion of the gas generator), for example, to keep the gas generator and the elastic portion safely.
  • the reinforcing member coated with plastic in particular be overmoulded (and / or have a metal core).
  • the reinforcing member may be formed as an open ring, which if necessary.
  • connection of open ring ends can be done by gluing or by latching or an additional component (such as a rivet or a screw).
  • the above-mentioned reinforcing ring may be made of metal and / or plastic.
  • the reinforcing insert and / or the reinforcing member and / or the reinforcing ring may have a metal core, which is at least partially coated with plastic, in particular encapsulated.
  • Reinforcing insert and / or reinforcing member and / or reinforcing ring may be made of metal and / or plastic, in particular fiber-reinforced plastic.
  • the reinforcing insert and / or the reinforcing member and / or the reinforcing ring may have at least one attachment portion, which is plastically deformable for attaching the mounting ring on the gas generator, in particular on a flange of the gas generator.
  • the attachment portion may be a (possibly annular or circumferential) edge of the respective component.
  • the attachment portion is formed as a fastening tab, which can be bent (in particular for producing a crimped connection).
  • a fastening tab can be placed around a flange of the gas generator and / or passed through a slot of the flange of the gas generator. After inserting the gas generator, individual sections of the respective component can be folded over the generator flange to keep it safe.
  • annular disc in particular made of metal and / or plastic, optionally coated with plastic, preferably encapsulated
  • the annular disc can in particular (possibly together with the flange of the gas generator) by the transfer of mounting portions of the (possibly. Overmolded with plastic) reinforcing insert are attached.
  • the annular disk can act as additional weight.
  • the annular disc may have a weight of at least 100 g.
  • the reinforcing insert and / or the reinforcing member and / or the reinforcing ring may have a latching device for latching attachment of the mounting ring on the gas generator, in particular on a flange of the gas generator.
  • the attachment ring can, for example, on the Flange of the gas generator are clipped and optionally detachable (or insoluble) can be attached with this.
  • the latching device may have at least one latching tongue which has a projection which can be guided past the flange of the gas generator, so that an edge of the flange engages behind the projection.
  • Particularly preferred in this alternative is an embodiment of the reinforcing member and / or the reinforcing insert and / or the reinforcing ring (if necessary. Completely) made of fiber-reinforced plastic.
  • the fastening ring can be detachably, preferably via a screw connection, or non-detachably, preferably via a rivet connection, to the gas generator, in particular to a flange of the gas generator, attached.
  • the reinforcing member may be formed (at least in part) by an open ring, which may be placed on the gas generator, in particular on a flange of the gas generator, for fixing the fastening ring.
  • the (open) ring preferably has at least one retaining projection which can be placed over the flange of the gas generator.
  • the reinforcing member is formed as a separate component which can be placed around the flange of the gas generator (with already arranged on this elastic portion), so that, if necessary, can be dispensed with a crimping of fastening sections.
  • Ends of the open ring may (preferably according to an arrangement of the ring on the gas generator, in particular the flange of the gas generator) be closable, in particular by a cohesive and / or non-positive and / or positive connection.
  • a latching connection and / or gluing and / or a welding and / or a screw connection and / or a riveted connection can be provided.
  • Fasteners can be an integral part of the (open) ring or provided as separate elements. Such a reinforcing part is particularly preferably made of plastic. Overall, a simple mounting of the mounting ring is made possible, which is made possible without a plastic deformation, in particular no metal parts needed.
  • the reinforcing insert is formed by an (open) reinforcing ring
  • this is preferably held together by the elastic portion.
  • the elastic portion is tensioned by a restoring force of the (open) reinforcing ring, in particular such that a holding force (force-friction force) between the open reinforcing ring and the elastic portion is increased.
  • a holding force force-friction force
  • the reinforcing insert and / or the reinforcing member and / or the reinforcing ring and / or the annular disc may be formed of a material having an modulus of at least 5 GPa, preferably at least 10 GPa, more preferably at least 100 GPa.
  • the elastic portion may be formed of an elastomer, in particular, a rubber material (rubber) or silicone.
  • An modulus of elastic material may be less than 1 GPa, preferably less than 0.5 GPa, more preferably less than 0.1 GPa.
  • At least one (preferably several) axially extending damping members in particular Tilgerfloome be provided.
  • the fastening ring may have a radially extending annular gap.
  • This annular gap can be bridged, for example, via a connecting device (integrally formed on the fastening ring), such as, for example, a clip connection, possibly comprising a pin, so that the fastening ring can be closed.
  • ends of the fastening ring can also be connected (in the mounted state) by providing projections provided at the ends through an opening of the gas generator, in particular the flange of the gas generator, and being held together by this opening.
  • an airbag module with a gas generator in particular comprising a flange, as well as with a device for the oscillatory attachment of a gas generator as a vibration damper mass within the airbag module.
  • the device for swingable attachment is, as described above, formed.
  • the airbag module may further comprise an airbag and / or a diffuser and / or a module carrier.
  • the elastic portion and / or the reinforcing insert and / or the reinforcing member may be in direct contact with the gas generator, in particular the flange of the gas generator.
  • the flange of the gas generator is preferably annular and can rotate around an outer wall of the gas generator.
  • the flange of the gas generator is formed integrally with an outer wall (s) of the gas generator.
  • the flange extends from an outer wall of the gas generator to the outside and has at least one bent portion, which optionally connects a straight portion of the flange with the outer wall.
  • the elastic portion may be arranged between the reinforcement part and the gas generator, in particular between the reinforcement part and the flange of the gas generator. If a reinforcing insert is provided, this can be arranged between elastic section and gas generator, in particular between the elastic section and the flange of the gas generator.
  • the fastening ring and the gas generator in particular the fastening ring and the flange of the gas generator, can material and / or force and / or positive fit, for example via a crimp and / or screw and / or riveting and / or locking and / or snap-fit fastened together.
  • a vehicle occupant safety system comprising an airbag module of the type described above.
  • an airbag module housing in particular a steering wheel housing may be provided.
  • the method is preferably used for producing a device for vibratory mounting of the type described above or for producing an airbag module of the type described above.
  • a device for vibratory mounting of a gas generator or the airbag module above functional features are described these optionally also in procedural terms further develop the method for producing a device for swingable attachment. This also applies to the following procedural aspects.
  • the reinforcing insert is formed by an open reinforcing ring, and the elastic portion by a closed ring, in which the reinforcing insert is received, wherein the elastic portion is applied to the reinforcing insert, that it is held together by a clamping force of the elastic portion.
  • the elastic property of the elastic portion is effectively utilized for stabilization and simplified mounting of the fixing ring. This reduces costs and simplifies assembly.
  • step b) takes place after step a).
  • the reinforcing member may be provided (initially) as a separate component which is assembled with the elastic portion and the gas generator. Overall, by such a manufacturing method, a secure holding of the gas generator can be realized, even if a bond between the elastic portion and the reinforcing member (for example, due to omission of cleaning of the reinforcing member) is not particularly high.
  • Fig. 1 shows an oblique view of a first embodiment of a device 10 for swingably mounting a gas generator 11 (see Fig. 2 ) as a vibration damper mass within an airbag module.
  • Fig. 2 shows an oblique view of the gas generator 11 with mounted thereon gas generator 11.
  • the device 10 has a mounting ring 12 with axially extending attenuators (Tilger happiness J) 13.
  • the fastening ring 12 comprises elastic portions, in particular of silicone (shown in purple or in a uniform shade / gray scale) and a reinforcing insert 15 (shown in olive green or in a uniform shade / gray scale).
  • the reinforcing insert 15 reinforces the elastic portions 14 and serves to fix the fastening ring 12 to a flange 16 of the gas generator 11 (see FIG Fig. 2 ).
  • the reinforcing insert 15 has a plurality of plastically deformable tabs 17 which can be placed around the flange 16 of the gas generator 11, so that the fastening ring 12 is held on the gas generator 11.
  • the reinforcing insert 15 according to Figures 1 and 2 is formed as a plastic overmolded metal part.
  • the Tilgerf chipse 13 are mounted in a mounted state of an airbag module to a generator support (not shown).
  • annular metal disc (not shown) may be placed on the flange 16 (which may or not be overmolded). The metal disc can then be fixed together with the flange of the inflator by flipping the tabs 16 and act as additional weight.
  • Fig. 3 shows a further embodiment of the device 10 with a mounting ring 12.
  • the mounting ring 12 has (analog Fig. 1 ) elastic portions 14 (violet or in uniform hue / grayscale colored) on and a reinforcing insert 15 (olive green or colored in a uniform hue / gray scale).
  • the embodiment according to Fig. 3 no tabs, but clips 18, which over the flange of the gas generator 11 (the, as in Fig. 2 can be shown) can be clipped.
  • the fastening ring 12 is fixed to the flange 16 of the gas generator 11.
  • the reinforcing insert 15 is (analogous to Fig.
  • the fastening ring 12 according to Fig. 3 continue to be secured by a screw on the flange 16 of the gas generator 11.
  • a screw receptacle 19 is provided.
  • the embodiment according to Fig. 3 also be adjusted so that (also optional) an additional rivet connection between the flange 16 and mounting ring 12 is provided.
  • FIG. 4 shows a device 10 with a mounting ring 12, the (analogous to Fig. 3 ) Has clips 18, the (as in connection with Fig. 3 described) on the flange 16 of the gas generator 11 (according to Fig. 2 can be formed) engage.
  • the mounting ring 12 has the mounting ring 12 according to Fig. 4 a gap 20, which can be opened during assembly (something), so that the mounting ring 12 can be clipped onto the flange 16 with less effort.
  • the clips 18 are provided only as (rigid) projections, with an assembly between the mounting ring 12 and flange 16 takes place in that the gap 20 is opened far enough.
  • the protrusions 18 would merely be securing protrusions which prevent the attachment ring 12 from disengaging from the flange 16.
  • the embodiment according to Fig. 4 designed for a (non-detachable) rivet and has for this purpose an opening 21. Via the opening 21, the fastening ring 12 can be connected to the flange 16. Furthermore, a positioning nipple 22 is provided, which is guided through an opening of the flange 16 of the gas generator 11 can be. By cooperation between a rivet connection and the position nipple 22 received in the opening, the slotted attachment ring 12 can be stabilized after assembly, so that the gap can not open.
  • the riveted connection can also be replaced by a screw connection.
  • the riveted connection could also be omitted.
  • the positioning nipple 22 is subdivided such that a first half is arranged on the one slot side and a second half on the other slot side, so that the overall positioning nipple are held together by an opening within the flange 16 of the gas generator could, in turn, prevent the gap from reopening after assembly.
  • the metal inserts are made of overmolded metal (olive green or in a uniform color / grayscale) and the elastic sections are made of silicone (violet or in a uniform shade / grayscale).
  • the overmolded reinforcing insert could also be made entirely of (possibly fiber-reinforced) plastic.
  • Fig. 5 shows a section of another embodiment of a connecting structure between the gas generator 11 and its flange 16 and the mounting ring 12.
  • a screw 23 is provided which fixes the flange 16 on the mounting ring 12 and its reinforcing insert.
  • the fastening ring is still secured by at least one fixing projection 24.
  • Fig. 6 shows an exploded view of another embodiment of the device 10.
  • the elastic portions 14 are here by a ring-shaped elastic member 26 (also the elastic portions 14 of the other embodiments may be formed by an elastic annular member 26) formed with Tilgereuropa H 13.
  • a reinforcing member 25 (which is also annular in shape) is provided which has openings 27 for receiving the Tilgerfoue 13.
  • the elastic element 26 is arranged on the flange of the gas generator. Then, the reinforcing member 25 is joined to the elastic member 26 so that the reinforcing member 25 engages around a peripheral surface 28 of the elastic member 26.
  • the Tilgerfterrorisme 13 are received in the openings 27.
  • the reinforcing member 25 is preferably a reinforcing member made of metal, in particular with plastic encapsulated.
  • Fig. 7 shows a schematic oblique view of another embodiment of the reinforcing member 25.
  • the reinforcing member 25 according to Fig. 7 (with the following differences) as the reinforcing member 25 according to FIG Fig. 6 be formed (for example, have openings 27).
  • the embodiment according to FIG Fig. 7 a gap 29 on or is formed as an open ring. This open ring can be placed around the flange of the gas generator (with the elastic element already arranged thereon), wherein it is not necessary to transfer sections for fixing (in particular crimping).
  • a holder can be realized by retaining projections 30, one of which by way of example (dashed lines) in Fig. 7 is recognizable.
  • the reinforcing member 25 is a reinforcing member made of metal or plastic.
  • Open ring ends can be done by gluing or by latching or an additional component (such as a screw or a rivet).
  • Fig. 8 shows a schematic oblique view of another embodiment of the mounting ring 12 (other components, such as Tilgerfborne may be provided).
  • an annular, continuous elastic element 26 is provided, in which an annular reinforcing insert 15 is arranged.
  • the annular reinforcing insert 15 is open.
  • the reinforcing member 15 may be formed of metal or plastic.
  • the attachment to the flange of the gas generator can, as described in the other embodiments, take place (for example, not shown, tabs or clips can be provided).
  • a gap 31 of the reinforcing insert 15 can be opened further, wherein the elastic element 26 stretches due to its elasticity.
  • a flange of the inflator may then be received by retaining elements (not shown in detail) of the reinforcing insert 15.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Bags (AREA)
  • Vibration Prevention Devices (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators als Schwingungsdämpfermasse innerhalb eines Airbagmoduls, ein Airbagmodul, ein Fahrzeuginsassen-Sicherungssystem, ein Verfahren zur Herstellung einer Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators als Schwingungsdämpfermasse innerhalb eines Airbagmoduls sowie ein Verfahren zur Herstellung eines Airbagmoduls.The invention relates to a device for vibratory attachment of a gas generator as a vibration damper mass within an airbag module, an airbag module, a vehicle occupant safety system, a method for producing a device for swingably mounting a gas generator as a vibration damper mass within an airbag module and a method for producing an airbag module.

Es sind Vorrichtungen zur schwingfähigen Befestigung eines Gasgenerators als Schwingungsdämpfermasse innerhalb eines Airbagmoduls bekannt, bei denen ein Befestigungsring, der zugleich als Schwingungstilger dient, vorgesehen ist. Üblicherweise bestehen derartige Befestigungsringe aus einem Metallring, der in Silikon eingespritzt ist und am Generatorflansch vercrimpt wird. Eine derartige Lösung ist beispielsweise aus DE 10 2009 030 601 A1 bekannt. Konkret wird in DE 10 2009 030 601 A1 eine ringförmige Verstärkungseinlage ("Halteteil") beschrieben, das axial abstehende Fortsätze in Form von abgewinkelten Zungen aufweist, die in eine Anschlaglippe eingebettet sind. Die Anschlaglippe besteht aus mehreren, entlang des Umfangs des Halteteils angeordneten Kreissegmenten aus Silikon. Weiterhin sind an dem Halteteil Befestigungsfüsse angespritzt, die aus einem elastischen Material bestehen und an einem Generatorträger befestigt sind. Alternativ wird in der DE 10 2009 030 601 A1 auch vorgeschlagen, dass die Anschlaglippe einstückig in den jeweiligen Befestigungsfuß übergeht und so einstückig umfangsmäßig geschlossen umläuft (also ebenfalls einen Ring ausbildet, in dem das Halteteil aufgenommen ist).There are known devices for vibratory mounting of a gas generator as a vibration damper mass within an airbag module, in which a fastening ring, which also serves as a vibration absorber, is provided. Usually, such mounting rings consist of a metal ring which is injected in silicone and is crimped on the generator flange. Such a solution is for example off DE 10 2009 030 601 A1 known. Specifically, in DE 10 2009 030 601 A1 an annular reinforcing insert ("holding part") described which has axially projecting projections in the form of angled tongues which are embedded in a stop lip. The abutment lip consists of several, arranged along the circumference of the holding part circular segments made of silicone. Furthermore, mounting feet are molded onto the holding part, which consist of an elastic material and are fastened to a generator carrier. Alternatively, in the DE 10 2009 030 601 A1 also proposed that the abutment lip integrally merges into the respective mounting foot and so one-piece circumferentially closed rotates (ie also forms a ring in which the holding part is added).

Problematisch ist hierbei, dass zur sicheren Haftung des elastischen Materials (insbesondere Silikons) am Metallring, dieser aufwendig gesäubert und bis zum Umspritzen sauber gehalten werden muss. Dies ist mit entsprechend hohen Kosten verbunden. Weiterhin wird der Aufwand zur Herstellung des Befestigungsrings sowie zur Montage eines entsprechenden Airbagmoduls mit einem derartigen Befestigungsring als verbesserungswürdig angesehen.The problem here is that for safe adhesion of the elastic material (in particular silicone) on the metal ring, this must be cleaned consuming and kept clean until overmolding. This is associated with correspondingly high costs. Furthermore, the cost of producing the mounting ring and for mounting a corresponding airbag module with such a mounting ring is considered to be in need of improvement.

Aus der DE 201 05 434 U1 ist im Übrigen ein Gassackmodul aus mehreren Komponenten bekannt, die wenigstens ein Trägerelement, einen Gasgenerator und einen Gassack umfassen, wobei wenigstens eine der Komponenten mittels wenigstens einem elastischen, aus Silikon bestehenden Element schwingungsentkoppelt im Gassackmodul gelagert ist.From the DE 201 05 434 U1 Incidentally, a gas bag module comprising a plurality of components is known, which comprise at least one carrier element, a gas generator and a gas bag, wherein at least one of the components by means of at least one elastic, made of silicone element is mounted vibrationally decoupled in the gas bag module.

Die Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators als Schwingungsdämpfermasse innerhalb eines Airbagmoduls vorzuschlagen, welche die oben genannten Nachteile überwindet. Insbesondere soll eine Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators als Schwingungsdämpfermasse vorgeschlagen werden, die einfach und kostengünstig herstellbar ist. Weiterhin soll ein Airbagmodul vorgeschlagen werden, dass mit vergleichsweise geringem Aufwand kostengünstig hergestellt und montiert werden kann. Weiterhin soll ein entsprechendes Fahrzeuginsassen-Sicherungssystem vorgeschlagen werden. Zuletzt sollen ein Verfahren zur Herstellung einer Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators als Schwingungsdämpfermasse innerhalb eines Airbagmoduls sowie ein Verfahren zur Herstellung eines Airbagmoduls vorgeschlagen werden, wobei die Herstellung einfach und mit vergleichsweise geringen Kosten ermöglicht sein soll.The object of the present invention is to propose a device for vibratory attachment of a gas generator as a vibration damper mass within an airbag module, which overcomes the disadvantages mentioned above. In particular, a device for vibratory mounting of a gas generator is to be proposed as a vibration damper mass, which is simple and inexpensive to produce. Furthermore, an airbag module is to be proposed that can be inexpensively manufactured and assembled with relatively little effort. Furthermore, a corresponding vehicle occupant safety system to be proposed. Finally, a method for producing a device for vibratory mounting of a gas generator as a vibration damper mass within an airbag module and a method for producing an airbag module are proposed, wherein the production should be possible easily and at relatively low cost.

Erfindungsgemäß wird diese Aufgabe im Hinblick auf die Vorrichtung zur schwingfähigen Befestigung durch den Gegenstand des Anspruchs 1, im Hinblick auf das Airbagmodul durch den Gegenstand gemäß Anspruch 9, im Hinblick auf das Fahrzeuginsassen-Sicherungssystem durch den Gegenstand gemäß Anspruch 12, im Hinblick auf das Verfahren zur Herstellung einer Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators durch die Gegenstände gemäß Anspruch 13 sowie im Hinblick auf das Verfahren zur Herstellung eines Airbagmoduls durch den Gegenstand gemäß Anspruch 15 gelöst.According to the invention this object is achieved with regard to the device for vibratory mounting by the subject of claim 1, with regard to the airbag module by the subject matter of claim 9, with regard to the vehicle occupant safety system by the subject matter of claim 12, in terms of the method for the production of a device for the swingable attachment of a gas generator by the objects according to claim 13 as well as with regard to the method for producing an airbag module by the object according to claim 15.

Erfindungsgemäß wird die obige Aufgabe durch eine Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators als Schwingungsdämpfermasse innerhalb eines Airbagmoduls gelöst, wobei ein Befestigungsring zur Befestigung des Gasgenerators vorgesehen ist, wobei der Befestigungsring mindestens einen elastischen Abschnitt und eine Verstärkungseinlage zur Verstärkung des Befestigungsrings und Fixierung des Befestigungsrings am Gasgenerator aufweist, wobei die Verstärkungseinlage zumindest teilweise aus Kunststoff ausgebildet. In einer ersten Ausführungsform wird eine Verstärkungseinlage mit einem Metallkern bereitgestellt, der (zumindest abschnittsweise) mit Kunststoff beschichtet, insbesondere umspritzt ist. In einer zweiten Ausführungsform wird eine Verstärkungseinlage vorgeschlagen, die vollständig aus (ggfs. faserverstärktem) Kunststoff ausgebildet ist. In jedem Fall ist eine Oberfläche der Verstärkungseinlage zumindest teilweise aus Kunststoff ausgebildet. Dadurch kann eine aufwendige Reinigung der Oberfläche des Metallteils entfallen, da der elastische Abschnitt vergleichsweise gut an der Kunststoffoberfläche haftet. Insbesondere ist die gesamte Oberfläche der Verstärkungseinlage oder zumindest die gesamte Oberfläche der Verstärkungseinlage, die in (unmittelbaren) Kontakt mit dem elastischen Abschnitt ist, aus Kunststoff ausgebildet. Zur Fixierung des Befestigungsrings am Gasgenerator kann dieser (ggf. integral angeformte) Befestigungseinrichtungen, wie beispielsweise plastisch verformbare Abschnitte (zur Realisierung beispielsweise einer Crimpverbindung) oder Rasteinrichtungen zur Realisierung einer Rastverbindung bzw. Schnappverbindung aufweisen.According to the invention the above object is achieved by a device for swingably mounting a gas generator as a vibration damper mass within an airbag module, wherein a fastening ring is provided for attachment of the gas generator, wherein the fastening ring at least one elastic portion and a reinforcing insert for reinforcing the mounting ring and fixing the mounting ring on the gas generator has, wherein the reinforcing insert at least partially formed of plastic. In a first embodiment, a reinforcing insert is provided with a metal core, which (at least in sections) coated with plastic, in particular overmolded. In a second embodiment, a reinforcing insert is proposed, which is formed completely from (optionally fiber-reinforced) plastic. In any case, a surface of the reinforcing insert is at least partly made of plastic. As a result, a complex cleaning of the surface of the metal part can be omitted since the elastic portion adheres comparatively well to the plastic surface. In particular, the entire surface of the reinforcing insert or at least the entire surface of the reinforcing insert, which is in (immediate) contact with the elastic portion, formed of plastic. To fix the mounting ring on the gas generator, this (possibly integrally molded) fasteners, such as plastically deformable sections (for example, a crimp connection) or locking devices for realizing a snap-in connection or snap connection.

Vorzugsweise wird die Verstärkungseinlage durch einen offenen Verstärkungsring gebildet, und der elastische Abschnitt durch einen geschlossenen Ring, in dem die Verstärkungseinlage aufgenommen ist. Ein Kerngedanke liegt hierbei darin, einen offenen Verstärkungsring auszubilden, der mit einem elastischen, geschlossenen Ring zusammenwirkt. Dadurch wird auf vorteilhafte Art und Weise die Tatsache ausgenutzt, dass der elastische Abschnitt zur Stabilisierung des grundsätzlich offenen Verstärkungsrings genutzt werden kann. Dadurch, dass der Verstärkungsring offen ausgebildet ist, kann dieser jedoch vergleichsweise einfach auf einem Flansch des Gasgenerators montiert werden. Weitere Bauteile zur Befestigung des Befestigungsrings können entfallen. Insgesamt wird die Montage vereinfacht. Außerdem wird durch das Zusammenwirken von elastischem Abschnitt und offenem Verstärkungsring auch eine Haftung zwischen diesen beiden Elementen verbessert, so dass eine aufwendige Reinigung des Verstärkungsrings, wenn dieser aus Metall ausgebildet ist, entfallen kann oder zumindest mit geringerem Aufwand durchgeführt werden kann.Preferably, the reinforcing insert is formed by an open reinforcing ring, and the elastic portion by a closed ring, in which the reinforcing insert is received. A key idea here is to form an open reinforcing ring, which cooperates with an elastic, closed ring. As a result, the fact is advantageously exploited that the elastic portion can be used to stabilize the basically open reinforcing ring. The fact that the reinforcing ring is formed open, however, this can be relatively easily mounted on a flange of the gas generator. Other components for fixing the mounting ring can be omitted. Overall, the assembly is simplified. In addition, adhesion between these two elements is improved by the interaction of elastic portion and open reinforcing ring, so that a complex cleaning of the reinforcing ring, if it is formed of metal, can be omitted or at least carried out with less effort.

Unter "Kunststoff" sollen insbesondere polymere Materialien verstanden werden, wie beispielsweise Polyolefin, vorzugsweise Polyethylen und/oder Polypropylen und/oder Polyamid und/oder Polyvinylchlorid und/oder Polystyrol und/oder Polyurethan und/oder Polyethylenterephthalat. Die erwähnten Kunststoffe können faserverstärkt sein, beispielsweise durch Kohlefaser und/oder Glasfaser. Ein E-Modul des Kunststoffs ist vorzugsweise mindestens 2 GPa vorzugsweise mindestens 5 GPa, weiter vorzugsweise mindestens 10 GPa, noch weiter vorzugsweise mindestens 50 GPa. Ein elastischer Abschnitt besteht vorzugsweise aus einem Material, dessen E-Modul kleiner als 1 GPa, vorzugsweise kleiner 0,5 GPa, weiter vorzugsweise kleiner 0,1 GPa ist. Sollte der elastische Abschnitt aus mehreren Materialien gefertigt sein, ist es bevorzugt, dass das Material mit dem höchsten E-Modul unterhalb der eben genannten Werte liegt. Beispielsweise kann der elastische Abschnitt aus einem Elastomer, insbesondere Silikon und/oder Kautschuk, gebildet sein oder derartige Materialien umfassen.By "plastic" is meant in particular polymeric materials, such as polyolefin, preferably polyethylene and / or polypropylene and / or polyamide and / or polyvinyl chloride and / or polystyrene and / or polyurethane and / or polyethylene terephthalate. The plastics mentioned may be fiber-reinforced, for example by carbon fiber and / or glass fiber. An elastic modulus of the plastic is preferably at least 2 GPa, preferably at least 5 GPa, more preferably at least 10 GPa, even more preferably at least 50 GPa. An elastic section is preferably made of a material whose modulus of elasticity is less than 1 GPa, preferably less than 0.5 GPa, more preferably less than 0.1 GPa. Should the elastic portion be made of several materials, it is preferred that the material be with the highest modulus of elasticity below the values just mentioned. For example, the elastic portion of an elastomer, in particular silicone and / or rubber, be formed or include such materials.

Gemäß einer Ausführungsform der Vorrichtung weist der Befestigungsring mindestens einen elastischen Abschnitt und ein Verstärkungsteil zur Verstärkung des Befestigungsrings und Fixierung des Befestigungsrings am Gasgenerator auf, wobei das Verstärkungsteil zumindest abschnittsweise den elastischen Abschnitt umgreift derart, dass der elastische Abschnitt an dem Gasgenerator gehalten werden kann. Ein Kerngedanke liegt hierbei darin, ein Verstärkungsteil vorzusehen, dass nicht nur zur Verstärkung des Befestigungsrings sowie ggfs. zur Befestigung an einem Flansch des Gasgenerators dient, sondern gleichzeitig auch so angeordnet ist, dass der elastische Abschnitt an dem Gasgenerator (bzw. zwischen Verstärkungsteil und Gasgenerator) gehalten wird. Das Verstärkungsteil kann aus Metall oder Kunststoff ausgebildet sein (oder derartige Materialien umfassen). In jedem Fall wird eine verbesserte Halterung des elastischen Abschnitts erreicht, so dass eine Reinigung des Verstärkungsteils entfallen kann oder zumindest mit geringerem Aufwand verbunden ist. Das Verstärkungsteil kann als separates Bauteil vorgesehen werden, das mit dem elastischen Abschnitt und dem Gasgenerator zusammengefügt wird derart, dass der elastische Abschnitt zwischen Verstärkungsteil und Gasgenerator gehalten wird. Das Verstärkungsteil kann (nach dem Einlegen des Gasgenerators) beispielsweise über den elastischen Abschnitt und den Flansch des Gasgenerators umgelegt werden, um den Gasgenerator sowie den elastischen Abschnitt sicher zu halten. Optional kann das Verstärkungsteil mit Kunststoff beschichtet, insbesondere umspritzt sein (und/oder einen Metallkern aufweisen). Weiterhin kann das Verstärkungsteil als offener Ring ausgebildet sein, der ggfs. so ausgebildet ist, dass er um den Flansch des Gasgenerators (insbesondere mit bereits angeordneten elastischem Abschnitt) gelegt wird, so dass unter Umständen auf ein Vercrimpen von Metallabschnitten verzichtet werden kann (zumindest wenn entsprechende Haltevorsprünge am Verstärkungsteil vorgesehen sind). Die Verbindung von offenen Ringenden kann durch Verkleben oder durch Verrasten oder ein Zusatzbauteil erfolgen (wie beispielsweise einen Niet oder eine Schraube).According to one embodiment of the device, the fastening ring has at least one elastic portion and a reinforcing member for reinforcing the fastening ring and fixation of the mounting ring on the gas generator, wherein the reinforcing member at least partially surrounds the elastic portion such that the elastic portion can be held on the gas generator. A key idea here is to provide a reinforcing member that not only serves to reinforce the mounting ring and, if necessary. For attachment to a flange of the gas generator, but is also arranged so that the elastic portion of the gas generator (or between the reinforcing member and gas generator ) is held. The reinforcing member may be formed of metal or plastic (or include such materials). In any case, an improved mounting of the elastic portion is achieved, so that a cleaning of the reinforcing member can be omitted or at least associated with less effort. The reinforcing member may be provided as a separate member which is assembled with the elastic portion and the inflator such that the elastic portion is held between the reinforcing member and the inflator. The reinforcing member may be folded over the elastic portion and the flange of the gas generator (after the insertion of the gas generator), for example, to keep the gas generator and the elastic portion safely. Optionally, the reinforcing member coated with plastic, in particular be overmoulded (and / or have a metal core). Furthermore, the reinforcing member may be formed as an open ring, which if necessary. Is designed so that it is placed around the flange of the gas generator (in particular with already arranged elastic portion), so that may be dispensed with a crimping of metal sections (at least if corresponding holding projections are provided on the reinforcing part). The connection of open ring ends can be done by gluing or by latching or an additional component (such as a rivet or a screw).

Der oben erwähnte Verstärkungsring kann aus Metall und/oder Kunststoff gefertigt sein.The above-mentioned reinforcing ring may be made of metal and / or plastic.

Die Verstärkungseinlage und/oder das Verstärkungsteil und/oder der Verstärkungsring können einen Metallkern aufweisen, der zumindest abschnittsweise mit Kunststoff beschichtet, insbesondere umspritzt ist. Verstärkungseinlage und/oder Verstärkungsteil und/oder Verstärkungsring können aus Metall und/oder Kunststoff, insbesondere faserverstärktem Kunststoff gefertigt sein.The reinforcing insert and / or the reinforcing member and / or the reinforcing ring may have a metal core, which is at least partially coated with plastic, in particular encapsulated. Reinforcing insert and / or reinforcing member and / or reinforcing ring may be made of metal and / or plastic, in particular fiber-reinforced plastic.

Die Verstärkungseinlage und/oder das Verstärkungsteil und/oder der Verstärkungsring können mindestens einen Befestigungsabschnitt aufweisen, der zur Befestigung des Befestigungsrings am Gasgenerator, insbesondere an einem Flansch des Gasgenerators, plastisch verformbar ist. Bei dem Befestigungsabschnitt kann es sich um einen (ggfs. ringförmigen bzw. umlaufenden) Rand des jeweiligen Bauteils handeln. Vorzugsweise ist der Befestigungsabschnitt als Befestigungslasche ausgebildet, die (insbesondere zur Herstellung einer Crimpverbindung) gebogen werden kann. Beispielsweise kann eine derartige Befestigungslasche um einen Flansch des Gasgenerators gelegt werden und/oder durch einen Schlitz des Flansches des Gasgenerators geführt werden. Nach einem Einlegen des Gasgenerators können einzelne Abschnitte des jeweiligen Bauteils über den Generatorflansch umgelegt werden, um diesen sicher zu halten. Mit einem derartigen Befestigungsabschnitt kann eine einfache Befestigung bzw. Montage des Gasgenerators realisiert werden.The reinforcing insert and / or the reinforcing member and / or the reinforcing ring may have at least one attachment portion, which is plastically deformable for attaching the mounting ring on the gas generator, in particular on a flange of the gas generator. The attachment portion may be a (possibly annular or circumferential) edge of the respective component. Preferably, the attachment portion is formed as a fastening tab, which can be bent (in particular for producing a crimped connection). For example, such a fastening tab can be placed around a flange of the gas generator and / or passed through a slot of the flange of the gas generator. After inserting the gas generator, individual sections of the respective component can be folded over the generator flange to keep it safe. With such a mounting portion, a simple attachment or assembly of the gas generator can be realized.

In einer konkreten Ausführungsform ist eine (zusätzliche) Ringscheibe (insbesondere aus Metall und/oder Kunststoff, ggfs. mit Kunststoff beschichtet, vorzugsweise umspritzt) vorgesehen, die auf den Generatorflansch gelegt werden kann. Die Ringscheibe kann insbesondere (ggf. zusammen mit dem Flansch des Gasgenerators) durch das Umlegen von Befestigungsabschnitten der (ggfs. mit Kunststoff umspritzten) Verstärkungseinlage befestigt werden. Grundsätzlich kann die Ringscheibe als Zusatzgewicht fungieren. Dadurch wird mit einfachen Maßnahmen die Schwingungsdämpfermasse erhöht, wobei auf synergistische Weise die Befestigung des Gasgenerators am Befestigungsring genutzt wird, um gleichzeitig auch das Zusatzgewicht zu befestigen. Insgesamt wird bei einfacher Montage die Effektivität der Vorrichtung erhöht. Die Ringscheibe kann ein Gewicht von mindestens 100 g aufweisen.In a specific embodiment, an (additional) annular disc (in particular made of metal and / or plastic, optionally coated with plastic, preferably encapsulated) is provided, which can be placed on the generator flange. The annular disc can in particular (possibly together with the flange of the gas generator) by the transfer of mounting portions of the (possibly. Overmolded with plastic) reinforcing insert are attached. In principle, the annular disk can act as additional weight. As a result, the vibration damper mass is increased by simple measures, wherein the attachment of the gas generator is used on the fastening ring in a synergistic manner, in order to fix the additional weight at the same time. Overall, the effectiveness of the device is increased with a simple installation. The annular disc may have a weight of at least 100 g.

Die Verstärkungseinlage und/oder das Verstärkungsteil und/oder der Verstärkungsring können eine Rasteinrichtung zur rastenden Befestigung des Befestigungsrings am Gasgenerator, insbesondere an einem Flansch des Gasgenerators, aufweisen. Der Befestigungsring kann beispielsweise auf den Flansch des Gasgenerators aufgeclipst werden und optional lösbar (oder unlösbar) mit diesem befestigt werden. Konkret kann die Rasteinrichtung mindestens eine Rastzunge aufweisen, die einen Vorsprung aufweist, der an dem Flansch des Gasgenerators vorbeigeführt werden kann, so dass ein Rand des Flansches hinter dem Vorsprung einrastet. Besonders bevorzugt bei dieser Alternative ist eine Ausführung des Verstärkungsteils und/oder der Verstärkungseinlage und/oder des Verstärkungsrings (ggfs. vollständig) aus faserverstärktem Kunststoff.The reinforcing insert and / or the reinforcing member and / or the reinforcing ring may have a latching device for latching attachment of the mounting ring on the gas generator, in particular on a flange of the gas generator. The attachment ring can, for example, on the Flange of the gas generator are clipped and optionally detachable (or insoluble) can be attached with this. Concretely, the latching device may have at least one latching tongue which has a projection which can be guided past the flange of the gas generator, so that an edge of the flange engages behind the projection. Particularly preferred in this alternative is an embodiment of the reinforcing member and / or the reinforcing insert and / or the reinforcing ring (if necessary. Completely) made of fiber-reinforced plastic.

Der Befestigungsring kann lösbar, vorzugsweise über eine Schraubverbindung, oder unlösbar, vorzugsweise über eine Nietverbindung, an dem Gasgenerator, insbesondere an einem Flansch des Gasgenerators, befestigt werden.The fastening ring can be detachably, preferably via a screw connection, or non-detachably, preferably via a rivet connection, to the gas generator, in particular to a flange of the gas generator, attached.

Das Verstärkungsteil kann (zumindest teilweise) durch einen offenen Ring gebildet werden, der zur Fixierung des Befestigungsrings an dem Gasgenerator, insbesondere an einem Flansch des Gasgenerators, gelegt werden kann. Der (offene) Ring weist vorzugsweise mindestens einen Haltevorsprung auf, der über den Flansch des Gasgenerators gelegt werden kann. Vorzugsweise ist das Verstärkungsteil als separates Bauteil ausgebildet, das um den Flansch des Gasgenerators (mit bereits an diesem angeordneten elastischen Abschnitt) gelegt werden kann, so dass ggfs. auf ein Vercrimpen von Befestigungsabschnitten verzichtet werden kann. Enden des offenen Rings können (nach einer Anordnung des Rings an dem Gasgenerator, insbesondere dem Flansch des Gasgenerators) vorzugsweise schließbar sein, insbesondere durch eine stoffschlüssige und/oder kraftschlüssige und/oder formschlüssige Verbindung. Beispielsweise kann eine Rastverbindung und/oder Verklebung und/oder eine Verschweißung und/oder eine Schraubverbindung und/oder eine Nietverbindung vorgesehen sein. Verbindungselemente können integraler Bestandteil des (offenen) Ringes sein oder als separate Elemente bereitgestellt werden. Besonders bevorzugt ist ein solches Verstärkungsteil aus Kunststoff gefertigt. Insgesamt wird eine einfache Montage des Befestigungsrings ermöglicht, die ohne eine plastische Umformung ermöglicht wird, insbesondere keine Metallteile benötigt.The reinforcing member may be formed (at least in part) by an open ring, which may be placed on the gas generator, in particular on a flange of the gas generator, for fixing the fastening ring. The (open) ring preferably has at least one retaining projection which can be placed over the flange of the gas generator. Preferably, the reinforcing member is formed as a separate component which can be placed around the flange of the gas generator (with already arranged on this elastic portion), so that, if necessary, can be dispensed with a crimping of fastening sections. Ends of the open ring may (preferably according to an arrangement of the ring on the gas generator, in particular the flange of the gas generator) be closable, in particular by a cohesive and / or non-positive and / or positive connection. For example, a latching connection and / or gluing and / or a welding and / or a screw connection and / or a riveted connection can be provided. Fasteners can be an integral part of the (open) ring or provided as separate elements. Such a reinforcing part is particularly preferably made of plastic. Overall, a simple mounting of the mounting ring is made possible, which is made possible without a plastic deformation, in particular no metal parts needed.

Wenn die Verstärkungseinlage durch einen (offenen) Verstärkungsring gebildet wird, wird dieser vorzugsweise durch den elastischen Abschnitt zusammengehalten. Insbesondere wird der elastische Abschnitt durch eine Rückstellkraft des (offenen) Verstärkungsrings gespannt, insbesondere derart, dass eine Haltekraft (Kraftreibungskraft) zwischen offenem Verstärkungsring und elastischem Abschnitt erhöht wird. Dadurch kann auf einfache Art und Weise eine verbesserte Halterung des elastischen Abschnitts an der Verstärkungseinlage erreicht werden. Insgesamt wird der Montage- bzw. Herstellungsaufwand reduziert.If the reinforcing insert is formed by an (open) reinforcing ring, this is preferably held together by the elastic portion. In particular, the elastic portion is tensioned by a restoring force of the (open) reinforcing ring, in particular such that a holding force (force-friction force) between the open reinforcing ring and the elastic portion is increased. As a result, an improved holder in a simple manner the elastic portion can be achieved on the reinforcing insert. Overall, the assembly or production costs are reduced.

Die Verstärkungseinlage und/oder das Verstärkungsteil und/oder der Verstärkungsring und/oder die Ringscheibe können aus einem Material gebildet sein, das ein E-Modul von mindestens 5 GPa, vorzugsweise mindestens 10 GPa, weiter vorzugsweise mindestens 100 GPa aufweist.The reinforcing insert and / or the reinforcing member and / or the reinforcing ring and / or the annular disc may be formed of a material having an modulus of at least 5 GPa, preferably at least 10 GPa, more preferably at least 100 GPa.

Der elastische Abschnitt kann aus einem Elastomer, insbesondere einem Gummimaterial (Kautschuk) oder Silikon gebildet werden. Ein E-Modul des Materials des elastischen Abschnitts kann unter 1 GPa, vorzugsweise unter 0,5 GPa, weiter vorzugsweise unter 0,1 GPa liegen.The elastic portion may be formed of an elastomer, in particular, a rubber material (rubber) or silicone. An modulus of elastic material may be less than 1 GPa, preferably less than 0.5 GPa, more preferably less than 0.1 GPa.

Es kann mindestens ein (vorzugsweise mehrere) axial verlaufende Dämpfungsglieder, insbesondere Tilgerfüße, vorgesehen sein. Der Befestigungsring kann einen radial verlaufenden Ringspalt aufweisen. Dieser Ringspalt kann beispielsweise über eine (an dem Befestigungsring angeformte) Verbindungseinrichtung, wie beispielsweise eine Clipverbindung, ggfs. umfassend einen Pin, überbrückt werden, so dass der Befestigungsring geschlossen werden kann. Ggfs. können Enden des Befestigungsrings auch dadurch (im montierten Zustand) verbunden werden, dass an den Enden vorgesehene Vorsprünge durch eine Öffnung des Gasgenerators, insbesondere des Flansches des Gasgenerators, geführt werden und durch diese Öffnung aneinander gehalten werden.At least one (preferably several) axially extending damping members, in particular Tilgerfüße be provided. The fastening ring may have a radially extending annular gap. This annular gap can be bridged, for example, via a connecting device (integrally formed on the fastening ring), such as, for example, a clip connection, possibly comprising a pin, so that the fastening ring can be closed. If necessary. For example, ends of the fastening ring can also be connected (in the mounted state) by providing projections provided at the ends through an opening of the gas generator, in particular the flange of the gas generator, and being held together by this opening.

Die obige Aufgabe wird weiter gelöst durch ein Airbagmodul mit einem Gasgenerator, insbesondere umfassend einen Flansch, sowie mit einer Vorrichtung zur schwingungsfähigen Befestigung eines Gasgenerators als Schwingungsdämpfermasse innerhalb des Airbagmoduls. Die Vorrichtung zur schwingfähigen Befestigung ist, wie oben beschrieben, ausgebildet. Das Airbagmodul kann weiterhin einen Gassack und/oder einen Diffusor und/oder einen Modulträger aufweisen. Der elastische Abschnitt und/oder die Verstärkungseinlage und/oder das Verstärkungsteil können in unmittelbarem Kontakt mit dem Gasgenerator, insbesondere dem Flansch des Gasgenerators, stehen.The above object is further achieved by an airbag module with a gas generator, in particular comprising a flange, as well as with a device for the oscillatory attachment of a gas generator as a vibration damper mass within the airbag module. The device for swingable attachment is, as described above, formed. The airbag module may further comprise an airbag and / or a diffuser and / or a module carrier. The elastic portion and / or the reinforcing insert and / or the reinforcing member may be in direct contact with the gas generator, in particular the flange of the gas generator.

Der Flansch des Gasgenerators ist vorzugsweise ringförmig und kann um eine Außenwandung des Gasgenerators umlaufen. Alternativ oder zusätzlich ist der Flansch des Gasgenerators integral mit einer (der) Außenwandung des Gasgenerators ausgebildet. In einer konkreten Ausführungsform erstreckt sich der Flansch von einer Außenwandung des Gasgenerators nach außen und weist wenigstens einen gebogenen Abschnitt auf, der ggf. einen geraden Abschnitt des Flansches mit der Außenwandung verbindet.The flange of the gas generator is preferably annular and can rotate around an outer wall of the gas generator. Alternatively or additionally, the flange of the gas generator is formed integrally with an outer wall (s) of the gas generator. In a specific embodiment, the flange extends from an outer wall of the gas generator to the outside and has at least one bent portion, which optionally connects a straight portion of the flange with the outer wall.

Der elastische Abschnitt kann zwischen Verstärkungsteil und Gasgenerator, insbesondere zwischen Verstärkungsteil und dem Flansch des Gasgenerators angeordnet sein. Wenn eine Verstärkungseinlage vorgesehen ist, kann diese zwischen elastischem Abschnitt und Gasgenerator, insbesondere zwischen dem elastischen Abschnitt und dem Flansch des Gasgenerators angeordnet sein.The elastic portion may be arranged between the reinforcement part and the gas generator, in particular between the reinforcement part and the flange of the gas generator. If a reinforcing insert is provided, this can be arranged between elastic section and gas generator, in particular between the elastic section and the flange of the gas generator.

Der Befestigungsring und der Gasgenerator, insbesondere der Befestigungsring und der Flansch des Gasgenerators, können stoff- und/oder kraft- und/oder formschlüssig, beispielsweise über eine Crimp- und/oder Schraub- und/oder Niet- und/oder Rast- und/oder Schnappverbindung aneinander befestigt sein.The fastening ring and the gas generator, in particular the fastening ring and the flange of the gas generator, can material and / or force and / or positive fit, for example via a crimp and / or screw and / or riveting and / or locking and / or snap-fit fastened together.

Die obige Aufgabe wird weiterhin gelöst durch ein Fahrzeuginsassen-Sicherungssystem, umfassend ein Airbagmodul der oben beschriebenen Art. Weiterhin kann ein Airbagmodul-Aufnahmegehäuse, insbesondere ein Lenkrad-gehäuse vorgesehen sein.The above object is further achieved by a vehicle occupant safety system, comprising an airbag module of the type described above. Furthermore, an airbag module housing, in particular a steering wheel housing may be provided.

Die obige Aufgabe wird weiterhin gelöst durch ein Verfahren zur Herstellung einer Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators als Schwingungsdämpfermasse innerhalb eines Airbagmoduls, wobei die Vorrichtung einen Befestigungsring zur Befestigung des Gasgenerators aufweist, wobei der Befestigungsring mindestens einen elastischen Abschnitt und eine Verstärkungseinlage zur Verstärkung des Befestigungsrings und Fixierung des Befestigungsrings am Gasgenerator aufweist, umfassend die Schritte:

  • Beschichten, insbesondere Umspritzen, einer Verstärkungseinlage mit Kunststoff und
  • Aufbringen des elastischen Abschnittes auf den Kunststoff.
The above object is further achieved by a method for producing a device for swingably mounting a gas generator as a vibration damper mass within an airbag module, wherein the device has a mounting ring for mounting the gas generator, wherein the mounting ring at least one elastic portion and a reinforcing insert for reinforcing the fastening ring and Fixation of the mounting ring on the gas generator, comprising the steps:
  • Coating, in particular overmolding, a reinforcing insert with plastic and
  • Applying the elastic portion to the plastic.

Das Verfahren wird vorzugsweise zur Herstellung einer Vorrichtung zur schwingfähigen Befestigung der oben beschriebenen Art eingesetzt bzw. zur Herstellung eines Airbagmoduls der oben beschriebenen Art. Insoweit im Zusammenhang mit der Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators bzw. dem Airbagmodul weiter oben funktionale Merkmale beschrieben sind, sollen diese optional auch in verfahrensmäßiger Hinsicht das Verfahren zur Herstellung einer Vorrichtung zur schwingfähigen Befestigung weiterbilden. Dies gilt auch für die nachfolgenden Verfahrensaspekte.The method is preferably used for producing a device for vibratory mounting of the type described above or for producing an airbag module of the type described above. Insofar as in the context of the device for vibratory mounting of a gas generator or the airbag module above functional features are described these optionally also in procedural terms further develop the method for producing a device for swingable attachment. This also applies to the following procedural aspects.

Gemäß einer Verfahrensvariante wird die Verstärkungseinlage durch einen offenen Verstärkungsring gebildet, und der elastische Abschnitt durch einen geschlossenen Ring, in dem die Verstärkungseinlage aufgenommen ist, wobei der elastische Abschnitt derart auf die Verstärkungseinlage aufgebracht wird, dass diese durch eine Spannkraft des elastischen Abschnitts zusammengehalten wird. Bei einem derartigen Verfahren wird die elastische Eigenschaft des elastischen Abschnitts auf effektive Art und Weise zur Stabilisierung und vereinfachten Montage des Befestigungsrings ausgenutzt. Dadurch werden Kosten reduziert und die Montage vereinfacht.According to a variant of the method, the reinforcing insert is formed by an open reinforcing ring, and the elastic portion by a closed ring, in which the reinforcing insert is received, wherein the elastic portion is applied to the reinforcing insert, that it is held together by a clamping force of the elastic portion. In such a method, the elastic property of the elastic portion is effectively utilized for stabilization and simplified mounting of the fixing ring. This reduces costs and simplifies assembly.

Gemäß einem weiteren Verfahrensaspekt wird die obige Aufgabe gelöst durch ein Verfahren zur Herstellung eines Airbagmoduls der oben beschriebenen Art mit einem Gasgenerator, einer Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators als Schwingungsdämpfermasse innerhalb eines Airbagmoduls, wobei die Vorrichtung gemäß der oben beschriebenen Art ausgebildet ist sowie gemäß dem oben beschriebenen Verfahren hergestellt wird, und wobei das Verfahren zur Herstellung des Airbagmoduls ferner die folgenden Schritte umfasst:

  1. a) Anordnen des elastischen Abschnitts an dem Gasgenerator, insbesondere einem Flansch des Gasgenerators,
  2. b) Zusammenfügen des Verstärkungsteils mit dem elastischen Abschnitt und dem Gasgenerator, und
  3. c) Befestigen des Verstärkungsteils am Gasgenerator, insbesondere dem Flansch des Gasgenerators.
According to a further method aspect, the above object is achieved by a method for producing an airbag module of the type described above with a gas generator, a device for swingably attaching a gas generator as a vibration damper mass within an airbag module, wherein the device is constructed in the manner described above and according to the The method for producing the airbag module further comprises the following steps:
  1. a) arranging the elastic section on the gas generator, in particular a flange of the gas generator,
  2. b) assembling the reinforcing member with the elastic portion and the gas generator, and
  3. c) attaching the reinforcing member to the gas generator, in particular the flange of the gas generator.

Vorzugsweise erfolgt Schritt b) nach dem Schritt a). Das Verstärkungsteil kann (zunächst) als separates Bauteil zur Verfügung gestellt werden, das mit dem elastischen Abschnitt und dem Gasgenerator zusammengefügt wird. Insgesamt kann durch derartiges Herstellungsverfahren ein sicheres Halten des Gasgenerators realisiert werden, auch wenn eine Haftung zwischen elastischem Abschnitt und Verstärkungsteil (beispielsweise aufgrund eines Verzichts einer Reinigung des Verstärkungsteils) nicht besonders hoch ist.Preferably, step b) takes place after step a). The reinforcing member may be provided (initially) as a separate component which is assembled with the elastic portion and the gas generator. Overall, by such a manufacturing method, a secure holding of the gas generator can be realized, even if a bond between the elastic portion and the reinforcing member (for example, due to omission of cleaning of the reinforcing member) is not particularly high.

Die Erfindung wird im Folgenden anhand von Ausführungsbeispielen unter Bezugnahme auf die beigefügten schematischen Figuren näher erläutert. Darin zeigen:

  • Fig. 1: Eine schematische Schrägansicht einer ersten Ausführungsform einer Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators;
  • Fig. 2: eine schematische Schrägansicht der Vorrichtung gemäß Fig. 1 zusammen mit einem Gasgenerator;
  • Fig. 3: eine schematische Schrägansicht einer weiteren Ausführungsform einer Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators;
  • Fig. 4: eine schematische Schrägansicht einer weiteren Ausführungsform einer Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators;
  • Fig. 5: einen Ausschnitt einer schematischen Schrägansicht eines Gasgenerators mit einer Vorrichtung zur schwingfähigen Befestigung des Gasgenerators;
  • Fig. 6: eine schematische Explosionsdarstellung einer weiteren Ausführungsform einer Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators;
  • Fig. 7: eine schematische Schrägansicht einer weiteren Ausführungsform einer Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators; und
  • Fig. 8: eine schematische Schrägansicht einer weiteren Ausführungsform einer Vorrichtung zur schwingfähigen Befestigung eines Gasgenerators.
The invention will be explained in more detail below with reference to embodiments with reference to the accompanying schematic figures. Show:
  • Fig. 1 : A schematic oblique view of a first embodiment of a device for vibratory mounting of a gas generator;
  • Fig. 2 : a schematic oblique view of the device according to Fig. 1 together with a gas generator;
  • Fig. 3 : a schematic oblique view of a further embodiment of a device for vibratory mounting of a gas generator;
  • Fig. 4 : a schematic oblique view of a further embodiment of a device for vibratory mounting of a gas generator;
  • Fig. 5 a section of a schematic oblique view of a gas generator with a device for vibratory mounting of the gas generator;
  • Fig. 6 : a schematic exploded view of another embodiment of a device for vibratory mounting of a gas generator;
  • Fig. 7 : a schematic oblique view of a further embodiment of a device for vibratory mounting of a gas generator; and
  • Fig. 8 : A schematic oblique view of another embodiment of a device for vibratory mounting of a gas generator.

In der nachfolgenden Beschreibung werden für gleiche und gleichwirkende Teile dieselben Bezugsziffern verwendet.In the following description, the same reference numerals are used for identical and equivalent parts.

Fig. 1 zeigt eine Schrägansicht einer ersten Ausführungsform einer Vorrichtung 10 zur schwingfähigen Befestigung eines Gasgenerators 11 (siehe Fig. 2) als Schwingungsdämpfermasse innerhalb eines Airbagmoduls. Fig. 2 zeigt eine Schrägansicht des Gasgenerators 11 mit darauf montierten Gasgenerator 11. Die Vorrichtung 10 weist einen Befestigungsring 12 mit axial verlaufenden Dämpfungsgliedern (Tilgerfüßen) 13 auf. Weiterhin umfasst der Befestigungsring 12 elastische Abschnitte insbesondere aus Silikon (violett bzw. in einheitlichem Farbton/Graustufe dargestellt) und eine Verstärkungseinlage 15 (olivgrün bzw. in einheitlichem Farbton/Graustufe dargestellt). Die Verstärkungseinlage 15 verstärkt die elastischen Abschnitte 14 und dient der Fixierung des Befestigungsrings 12 an einem Flansch 16 des Gasgenerators 11 (siehe Fig. 2). Fig. 1 shows an oblique view of a first embodiment of a device 10 for swingably mounting a gas generator 11 (see Fig. 2 ) as a vibration damper mass within an airbag module. Fig. 2 shows an oblique view of the gas generator 11 with mounted thereon gas generator 11. The device 10 has a mounting ring 12 with axially extending attenuators (Tilgerfüßen) 13. Furthermore, the fastening ring 12 comprises elastic portions, in particular of silicone (shown in purple or in a uniform shade / gray scale) and a reinforcing insert 15 (shown in olive green or in a uniform shade / gray scale). The reinforcing insert 15 reinforces the elastic portions 14 and serves to fix the fastening ring 12 to a flange 16 of the gas generator 11 (see FIG Fig. 2 ).

Dazu weist die Verstärkungseinlage 15 mehrere plastisch verformbare Laschen 17 auf, die um den Flansch 16 des Gasgenerators 11 gelegt werden können, so dass der Befestigungsring 12 am Gasgenerator 11 gehalten wird.For this purpose, the reinforcing insert 15 has a plurality of plastically deformable tabs 17 which can be placed around the flange 16 of the gas generator 11, so that the fastening ring 12 is held on the gas generator 11.

Die Verstärkungseinlage 15 gemäß den Figuren 1 und 2 ist als Kunststoff umspritztes Metallteil ausgebildet.The reinforcing insert 15 according to Figures 1 and 2 is formed as a plastic overmolded metal part.

Die Tilgerfüße 13 werden in einem montierten Zustand eines Airbagmoduls an einem (nicht gezeigten) Generatorträger befestigt.The Tilgerfüße 13 are mounted in a mounted state of an airbag module to a generator support (not shown).

Optional kann auf den Flansch 16 eine (nicht gezeigte) ringförmige Metallscheibe aufgelegt werden (die umspritzt sein kann, aber nicht muss). Die Metallscheibe kann dann zusammen mit dem Flansch des Gasgenerators durch das Umlegen der Laschen 16 befestigt werden und als Zusatzgewicht fungieren.Optionally, an annular metal disc (not shown) may be placed on the flange 16 (which may or not be overmolded). The metal disc can then be fixed together with the flange of the inflator by flipping the tabs 16 and act as additional weight.

Fig. 3 zeigt eine weitere Ausführungsform der Vorrichtung 10 mit einem Befestigungsring 12. Der Befestigungsring 12 weist (analog Fig. 1) elastische Abschnitte 14 (violett bzw. in einheitlichem Farbton/Graustufe eingefärbt) auf sowie eine Verstärkungseinlage 15 (olivgrün bzw. in einheitlichem Farbton/Graustufe eingefärbt). Im Unterschied zu der Ausführungsform nach Fig. 1 weist die Ausführungsform nach Fig. 3 keine Laschen, sondern Clips 18 auf, die über dem Flansch des Gasgenerators 11 (der, wie in Fig. 2 gezeigt, ausgebildet sein kann) geclipst werden können. Dadurch wird der Befestigungsring 12 an dem Flansch 16 des Gasgenerators 11 fixiert. Die Verstärkungseinlage 15 ist (analog zu Fig. 1) aus einem kunststoff-umspritzten Metallteil gebildet, kann jedoch auch gänzlich aus (ggfs. faserverstärktem) Kunststoff ausgebildet werden. Optional kann der Befestigungsring 12 gemäß Fig. 3 weiterhin durch eine Schraubverbindung an dem Flansch 16 des Gasgenerators 11 gesichert werden. Dazu ist eine Schraubenaufnahme 19 vorgesehen. Alternativ kann die Ausführungsform nach Fig. 3 auch so angepasst werden, dass (ebenfalls optional) eine zusätzliche Nietverbindung zwischen Flansch 16 und Befestigungsring 12 bereitgestellt ist. Fig. 3 shows a further embodiment of the device 10 with a mounting ring 12. The mounting ring 12 has (analog Fig. 1 ) elastic portions 14 (violet or in uniform hue / grayscale colored) on and a reinforcing insert 15 (olive green or colored in a uniform hue / gray scale). Unlike the embodiment according to Fig. 1 the embodiment according to Fig. 3 no tabs, but clips 18, which over the flange of the gas generator 11 (the, as in Fig. 2 can be shown) can be clipped. As a result, the fastening ring 12 is fixed to the flange 16 of the gas generator 11. The reinforcing insert 15 is (analogous to Fig. 1 ) formed from a plastic-molded metal part, but can also be made entirely of plastic (if necessary. Fiber Reinforced). Optionally, the fastening ring 12 according to Fig. 3 continue to be secured by a screw on the flange 16 of the gas generator 11. For this purpose, a screw receptacle 19 is provided. Alternatively, the embodiment according to Fig. 3 also be adjusted so that (also optional) an additional rivet connection between the flange 16 and mounting ring 12 is provided.

Fig. 4 zeigt eine Vorrichtung 10 mit einem Befestigungsring 12, der (analog zu Fig. 3) Clips 18 aufweist, die (wie im Zusammenhang mit Fig. 3 beschrieben) an dem Flansch 16 des Gasgenerators 11 (der gemäß Fig. 2 ausgebildet sein kann) einrasten. Im Unterschied zu den Figuren 3 und 1 (die spaltlose Ausführungsformen des Befestigungsrings 12 zeigen) hat der Befestigungsring 12 gemäß Fig. 4 einen Spalt 20, der bei der Montage (etwas) geöffnet werden kann, so dass der Befestigungsring 12 mit geringerem Aufwand auf den Flansch 16 aufgeclipst werden kann. Gegebenenfalls wäre es auch vorstellbar, dass die Clips 18 lediglich als (starre) Vorsprünge vorgesehen sind, wobei eine Montage zwischen Befestigungsring 12 und Flansch 16 dadurch erfolgt, dass der Spalt 20 weit genug geöffnet wird. Bei einer derartigen Alternative wären die Vorsprünge 18 lediglich Sicherungsvorsprünge, die verhindern, dass sich der Befestigungsring 12 vom Flansch 16 lösen kann. Weiterhin ist die Ausführungsform gemäß Fig. 4 für eine (unlösbare) Nietverbindung ausgelegt und weist dazu eine Öffnung 21 auf. Über die Öffnung 21 kann der Befestigungsring 12 mit dem Flansch 16 verbunden werden. Weiterhin ist ein Positioniernippel 22 vorgesehen, der durch eine Öffnung des Flansches 16 des Gasgenerators 11 geführt werden kann. Durch Zusammenwirken zwischen einer Nietverbindung und dem in der Öffnung aufgenommenen Positioniernippel 22 kann der geschlitzte Befestigungsring 12 nach der Montage stabilisiert werden, so dass sich der Spalt nicht mehr öffnen kann. Fig. 4 shows a device 10 with a mounting ring 12, the (analogous to Fig. 3 ) Has clips 18, the (as in connection with Fig. 3 described) on the flange 16 of the gas generator 11 (according to Fig. 2 can be formed) engage. Unlike the Figures 3 and 1 (Show the gapless embodiments of the mounting ring 12) has the mounting ring 12 according to Fig. 4 a gap 20, which can be opened during assembly (something), so that the mounting ring 12 can be clipped onto the flange 16 with less effort. Optionally, it would also be conceivable that the clips 18 are provided only as (rigid) projections, with an assembly between the mounting ring 12 and flange 16 takes place in that the gap 20 is opened far enough. In such an alternative, the protrusions 18 would merely be securing protrusions which prevent the attachment ring 12 from disengaging from the flange 16. Furthermore, the embodiment according to Fig. 4 designed for a (non-detachable) rivet and has for this purpose an opening 21. Via the opening 21, the fastening ring 12 can be connected to the flange 16. Furthermore, a positioning nipple 22 is provided, which is guided through an opening of the flange 16 of the gas generator 11 can be. By cooperation between a rivet connection and the position nipple 22 received in the opening, the slotted attachment ring 12 can be stabilized after assembly, so that the gap can not open.

In Fig. 4 kann die Nietverbindung auch durch eine Schraubverbindung ersetzt werden. In einer einfacheren Ausgestaltung könnte die Nietverbindung auch weggelassen werden. Beispielsweise wäre es auch vorstellbar, dass sich der Positioniernippel 22 derart unterteilt, dass eine erste Hälfte auf der einen Schlitzseite und eine zweite Hälfte auf der anderen Schlitzseite angeordnet ist, so dass der Gesamt-Positioniernippel durch eine Öffnung innerhalb des Flansches 16 des Gasgenerators zusammengehalten werden könnte, was wiederum verhindern würde, dass sich der Spalt nach der Montage wieder öffnen würde.In Fig. 4 the riveted connection can also be replaced by a screw connection. In a simpler embodiment, the riveted connection could also be omitted. For example, it would also be conceivable that the positioning nipple 22 is subdivided such that a first half is arranged on the one slot side and a second half on the other slot side, so that the overall positioning nipple are held together by an opening within the flange 16 of the gas generator could, in turn, prevent the gap from reopening after assembly.

Wie in Fig. 3 ist in Fig. 4 der Metalleinleger aus umspritzten Metall ausgebildet (olivgrün bzw. in einheitlichem Farbton/Graustufe) und die elastischen Abschnitte aus Silikon (violett bzw. in einheitlichem Farbton/Graustufe). Die umspritzte Verstärkungseinlage könnte jedoch auch gänzlich aus (ggfs. faserverstärktem) Kunststoff ausgebildet sein.As in Fig. 3 is in Fig. 4 the metal inserts are made of overmolded metal (olive green or in a uniform color / grayscale) and the elastic sections are made of silicone (violet or in a uniform shade / grayscale). However, the overmolded reinforcing insert could also be made entirely of (possibly fiber-reinforced) plastic.

Fig. 5 zeigt einen Ausschnitt einer weiteren Ausführungsform einer Verbindungsstruktur zwischen Gasgenerator 11 bzw. dessen Flansch 16 und dem Befestigungsring 12. Insbesondere ist eine Schraubverbindung 23 vorgesehen, die den Flansch 16 am Befestigungsring 12 bzw. dessen Verstärkungseinlage fixiert. Weiterhin ist der Befestigungsring noch durch mindestens einen Fixiervorsprung 24 gesichert. Fig. 5 shows a section of another embodiment of a connecting structure between the gas generator 11 and its flange 16 and the mounting ring 12. In particular, a screw 23 is provided which fixes the flange 16 on the mounting ring 12 and its reinforcing insert. Furthermore, the fastening ring is still secured by at least one fixing projection 24.

Fig. 6 zeigt eine Explosionsdarstellung einer weiteren Ausführungsform der Vorrichtung 10. Die elastischen Abschnitte 14 werden hier durch ein ringförmiges elastisches Element 26 (auch die elastischen Abschnitte 14 der übrigen Ausführungsformen können durch ein elastisches ringförmiges Element 26 gebildet werden) mit Tilgerfüßen 13 gebildet. Weiterhin ist ein Verstärkungsteil 25 (das ebenfalls ringförmig ausgebildet ist) vorgesehen, das Öffnungen 27 zur Aufnahme der Tilgerfüße 13 aufweist. Zur Montage der Vorrichtung 10 an dem Gasgenerator wird das elastische Element 26 an dem Flansch des Gasgenerators angeordnet. Daraufhin wird das Verstärkungsteil 25 mit dem elastischen Element 26 zusammengefügt, so dass das Verstärkungsteil 25 eine Umfangsfläche 28 des elastischen Elements 26 umgreift. Dabei sind die Tilgerfüße 13 in den Öffnungen 27 aufgenommen. Nach dem Anfügen des Verstärkungsteils 25 können (einzelne) Abschnitte des Verstärkungsteils 25 über das elastische Element 26 und den Flansch des Gasgenerators umgelegt werden, so dass der Gasgenerator sicher gehalten wird. In der Ausführungsform gemäß Fig. 6 handelt es sich bei dem Verstärkungsteil 25 vorzugsweise um ein Verstärkungsteil aus Metall, insbesondere mit Kunststoff umspritzt. Fig. 6 shows an exploded view of another embodiment of the device 10. The elastic portions 14 are here by a ring-shaped elastic member 26 (also the elastic portions 14 of the other embodiments may be formed by an elastic annular member 26) formed with Tilgerfüßen 13. Furthermore, a reinforcing member 25 (which is also annular in shape) is provided which has openings 27 for receiving the Tilgerfüße 13. For mounting the device 10 to the gas generator, the elastic element 26 is arranged on the flange of the gas generator. Then, the reinforcing member 25 is joined to the elastic member 26 so that the reinforcing member 25 engages around a peripheral surface 28 of the elastic member 26. The Tilgerfüße 13 are received in the openings 27. To By attaching the reinforcing member 25, (individual) portions of the reinforcing member 25 can be folded over the elastic member 26 and the flange of the gas generator, so that the inflator is securely held. In the embodiment according to Fig. 6 it is in the reinforcing member 25 is preferably a reinforcing member made of metal, in particular with plastic encapsulated.

Fig. 7 zeigt eine schematische Schrägansicht einer weiteren Ausführungsform des Verstärkungsteils 25. Grundsätzlich kann das Verstärkungsteil 25 gemäß Fig. 7 (mit den folgenden Unterschieden) wie das Verstärkungsteil 25 gemäß Fig. 6 ausgebildet sein (beispielsweise Öffnungen 27 aufweisen). Im Unterschied zu der Ausführungsform gemäß Fig. 6, bei der das Verstärkungsteil 25 ununterbrochen ausgeführt ist, weist die Ausführungsform gemäß Fig. 7 einen Spalt 29 auf bzw. ist als offener Ring ausgebildet. Dieser offene Ring kann um den Flansch des Gasgenerators (mit bereits daran angeordnetem elastischen Element) gelegt werden, wobei ein Umlegen von Abschnitten zur Fixierung (insbesondere ein Vercrimpen) nicht notwendig ist. Eine Halterung kann durch Haltevorsprünge 30 realisiert werden, von denen einer exemplarisch (gestrichelt gezeichnet) in Fig. 7 erkennbar ist. In der Ausführungsform gemäß Fig. 7 kann es sich bei dem Verstärkungsteil 25 um ein Verstärkungsteil aus Metall oder auch Kunststoff handeln. Offene Ringenden können durch Verkleben oder durch Verrasten oder auch ein Zusatzbauteil erfolgen (wie beispielsweise eine Schraube oder ein Niet). Fig. 7 shows a schematic oblique view of another embodiment of the reinforcing member 25. Basically, the reinforcing member 25 according to Fig. 7 (with the following differences) as the reinforcing member 25 according to FIG Fig. 6 be formed (for example, have openings 27). Unlike the embodiment according to Fig. 6 in which the reinforcing member 25 is made continuous, the embodiment according to FIG Fig. 7 a gap 29 on or is formed as an open ring. This open ring can be placed around the flange of the gas generator (with the elastic element already arranged thereon), wherein it is not necessary to transfer sections for fixing (in particular crimping). A holder can be realized by retaining projections 30, one of which by way of example (dashed lines) in Fig. 7 is recognizable. In the embodiment according to Fig. 7 it may be in the reinforcing member 25 is a reinforcing member made of metal or plastic. Open ring ends can be done by gluing or by latching or an additional component (such as a screw or a rivet).

Fig. 8 zeigt eine schematische Schrägansicht einer weiteren Ausführungsform des Befestigungsrings 12 (weitere Komponenten, wie insbesondere Tilgerfüße, können vorgesehen sein). Bei der Ausführungsform gemäß Fig. 8 ist ein ringförmiges, ununterbrochenes elastisches Element 26 vorgesehen, in dem eine ringförmige Verstärkungseinlage 15 angeordnet ist. Die ringförmige Verstärkungseinlage 15 ist jedoch offen ausgebildet. Das Verstärkungsteil 15 kann aus Metall oder Kunststoff ausgebildet sein. Die Befestigung am Flansch des Gasgenerators kann, wie bei den übrigen Ausführungsformen beschrieben, erfolgen (beispielsweise können dazu, nicht gezeigte, Laschen oder Clips vorgesehen sein). Fig. 8 shows a schematic oblique view of another embodiment of the mounting ring 12 (other components, such as Tilgerfüße may be provided). In the embodiment according to Fig. 8 an annular, continuous elastic element 26 is provided, in which an annular reinforcing insert 15 is arranged. However, the annular reinforcing insert 15 is open. The reinforcing member 15 may be formed of metal or plastic. The attachment to the flange of the gas generator can, as described in the other embodiments, take place (for example, not shown, tabs or clips can be provided).

Bei der Montage kann ein Spalt 31 der Verstärkungseinlage 15 weiter geöffnet werden, wobei sich das elastische Element 26 aufgrund seiner Elastizität dehnt. Ein Flansch des Gasgenerators kann dann von (nicht im Detail dargestellten) Halteelementen der Verstärkungseinlage 15 aufgenommen werden. Sobald die Verstärkungseinlage 15 und der Flansch aneinander fixiert sind, zieht das elastische Element 26 die Verstärkungseinlage 15 zusammen, so dass diese stabilisiert wird und der Gasgenerator sicher gehalten werden kann.During assembly, a gap 31 of the reinforcing insert 15 can be opened further, wherein the elastic element 26 stretches due to its elasticity. A flange of the inflator may then be received by retaining elements (not shown in detail) of the reinforcing insert 15. Once the reinforcing insert 15 and the flange are fixed together, the elastic element pulls 26, the reinforcing insert 15 together so that it is stabilized and the gas generator can be securely held.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Vorrichtungdevice
1111
Gasgeneratorinflator
1212
Befestigungsringfixing ring
1313
Dämpfungsglied (Tilgerfuß)Attenuator (Tilgerfuß)
1414
elastischer Abschnittelastic section
1515
Verstärkungseinlagereinforcing insert
1616
Flanschflange
1717
Lascheflap
1818
Clipclip
1919
Schraubenaufnahmescrew receptacle
2020
Spaltgap
2121
Öffnungopening
2222
PositioniernippelPositioning nipple
2323
Schraubverbindungscrew
2424
Fixiervorsprungfixing projection
2525
Verstärkungsteilreinforcing part
2626
elastisches Elementelastic element
2727
Öffnungopening
2828
Umfangsflächeperipheral surface
2929
Spaltgap
3030
Haltevorsprungretaining projection
3131
Spaltgap

Claims (15)

  1. An apparatus (10) for fastening a gas generator (11) in an oscillating manner as a vibration damping mass inside an airbag module,
    a fastening ring (12) being provided for fastening the gas generator (11),
    wherein the fastening ring (12) has at least one elastic section (14) and at least one reinforcement insert (15) for reinforcing the fastening ring (12) and securing the fastening ring (12) to the gas generator,
    wherein a surface of the reinforcement insert (15) is at least partially made of plastic.
  2. The apparatus (10) according to claim 1, characterized in that the reinforcement insert (15) is formed by a reinforcing ring (15) which is open in the circumferential direction of the ring, and the elastic section (14) is formed by a closed ring (26) in which the reinforcement insert (15) is received.
  3. The apparatus (10) according to claim 1 or 2, characterized in that the fastening ring (12) has at least one elastic section (14) and a reinforcing member (25) for reinforcing the fastening ring (12) and securing the fastening ring (12) to the gas generator (11), wherein the reinforcing member (25) at least in portions encompasses the elastic section (14) such that the elastic section (14) can be secured to the gas generator (11).
  4. The apparatus (10) according to any one of the preceding claims, characterized in that the reinforcement insert (15) and/or the reinforcing member (25) has/have a metal core which is coated, especially over-molded, at least in portions with plastic, and/or in that the reinforcement insert and/or the reinforcing member (25) is/are made at least in part from metal and/or plastic, especially fiber-reinforced plastic and/or in that the reinforcement insert (15) and/or the reinforcing member (25) include(s) at least one fastening portion, especially a fastening lug (17), which is plastically deformable for fastening the fastening ring (12) to the gas generator (11) especially to a flange (16) of the gas generator (11) and/or in that the reinforcement insert (15) and/or the reinforcing member (25) include(s) a detent means, especially a clip (18) for latching the fastening ring to the gas generator (11), especially to a flange (16) of the gas generator.
  5. The apparatus (10) according to any one of the preceding claims, characterized in that the fastening ring (12) can be fastened detachably, preferably via a screwed connection (23), or permanently, preferably via a riveted connection, to the gas generator (11), especially to a flange (16) of the gas generator (11) and/or in that an additional ring disk is provided which can be placed onto a flange of the gas generator.
  6. The apparatus (10) according to any one of the preceding claims, characterized in that the reinforcing member (25) is formed at least in part by an open ring, which preferably includes at least one retaining projection which can be laid onto the gas generator (11), especially to a flange (16) of the gas generator (11) for securing the fastening ring, wherein, after arranging the ring on the gas generator (11) ends of the open ring preferably can be closed especially by an integral and/or non-positive and/or positive connection, for example by a detent connection and/or adhesive connection and/or welded connection and/or screwed connection and/or riveted connection, wherein connecting elements may be an integral part of the ring or may be provided as separate elements, and/or in that the open reinforcing ring is held together by the elastic section (14), wherein, preferably, the elastic section is tensioned by a resetting force of the open reinforcing ring, especially such that a static friction force between the open reinforcing ring and the elastic section is increased.
  7. The apparatus (10) according to at least one of the preceding claims, characterized in that the reinforcement insert (15) and/or the reinforcing member (25) is/are made from a material which has an E-modulus of at least 5 GPa, preferably at least 10 GPa, further preferably at least 100 GPa, and/or in that the elastic section is made from an elastomer, especially a rubber material or silicone, and/or in that the E-modulus of a material of the elastic section (14) is less than 1 GPa, preferably less than 0.5 GPa, further preferably less than 0.1 GPa.
  8. The apparatus (10) according to any one of the preceding claims, characterized by at least one axially extending damping member (13), especially plural absorbing feet, and/or in that the fastening ring has a radially extending annular gap.
  9. An airbag module comprising a gas generator (11), especially including a flange (16), as well as comprising an apparatus (10) for fastening a gas generator (11) in an oscillating manner as a vibration damping mass inside the airbag module according to any one of the preceding claims, as well as comprising an airbag and/or a diffusor and/or a module support.
  10. The airbag module according to claim 9, characterized in that the elastic section (14) and/or the reinforcement insert (15) and/or the reinforcing member (25) is/are in direct contact with the gas generator (11), especially with the flange (16) of the gas generator (11), and/or in that the flange of the gas generator is annularly circumferential about an outer wall of the gas generator and/or is formed integrally with the outer wall of the gas generator, and/or in that the elastic section is arranged between the reinforcing member (25) and the gas generator (11), especially the flange (16) of the gas generator (11), and/or in that the reinforcement insert (15) is arranged between the elastic section (14) and the gas generator (11), especially the flange (16) of the gas generator.
  11. The airbag module according to any one of the claims 9 or 10, characterized in that the fastening ring (12) and the gas generator (11), especially the fastening ring and the flange (16) of the gas generator (11) are integrally and/or non-positively and/or positively fastened to each other, for example by a crimped and/or screwed and/or riveted and/or detent and/or snap connection.
  12. A vehicle occupant safety system comprising an airbag module according to any one of the claims 9 to 11 as well as a housing receiving an airbag module, especially a steering wheel housing.
  13. A method of manufacturing an apparatus (10) for fastening a gas generator (11) in an oscillating manner as a vibration damping mass inside an airbag module, especially according to any one of the claims 1 to 8,
    the apparatus (10) including a fastening ring (12) for fastening the gas generator (11),
    wherein the fastening ring (12) has at least one elastic section (14) and one reinforcement insert (15) for reinforcing the fastening ring and securing the fastening ring (12) to the gas generator (11), comprising the steps of:
    - coating, especially over-molding, of the reinforcement insert (15) with plastic and
    - applying the elastic section to the plastic material.
  14. The method according to claim 13, characterized in that
    the reinforcement insert (15) is formed by an reinforcing ring which is open in the circumferential direction of the ring and the elastic section (14) is formed by a closed ring in which the reinforcement insert (15) is received,
    wherein the elastic section (14) is applied to the reinforcement insert so that the latter is held together by elasticity of the elastic section (14).
  15. A method of manufacturing an airbag module according to any one of the claims 9 to 11 comprising a gas generator (11) and an apparatus (10) according to any one of the claims 1 to 8,
    wherein the apparatus (10) is manufactured according to a method according to claim 13 or 14, and wherein the method of manufacturing the airbag module further comprises the following steps:
    a) arranging the elastic section (14) on the gas generator (11), especially on a flange (16) of the gas generator (11),
    b) joining the reinforcing member (25) with the elastic section (14) and the gas generator (11), and
    c) fastening the reinforcing member (25) to the gas generator (11), especially to the flange (16) of the gas generator (11).
EP15788323.2A 2014-10-23 2015-10-09 Device for fixing oscillatable a gas generator as a vibration damper mass within an airbag module Active EP3209526B1 (en)

Priority Applications (1)

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EP18195612.9A EP3483011B1 (en) 2014-10-23 2015-10-09 Device for fixing oscillatable a gas generator as a vibration damper mass within an airbag module

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DE202014008432.7U DE202014008432U1 (en) 2014-10-23 2014-10-23 Device for vibratory mounting of a gas generator in an airbag module
PCT/EP2015/001989 WO2016062377A1 (en) 2014-10-23 2015-10-09 Apparatus for fastening a gas generator in an oscillatory manner as a vibration damping mass inside an airbag module

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EP18195612.9A Division EP3483011B1 (en) 2014-10-23 2015-10-09 Device for fixing oscillatable a gas generator as a vibration damper mass within an airbag module
EP18195612.9A Division-Into EP3483011B1 (en) 2014-10-23 2015-10-09 Device for fixing oscillatable a gas generator as a vibration damper mass within an airbag module

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EP3209526B1 true EP3209526B1 (en) 2019-01-30

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EP15787453.8A Active EP3209525B1 (en) 2014-10-23 2015-10-09 Airbag module, diffuser for an airbag module and vehicle occupant safety system
EP15788323.2A Active EP3209526B1 (en) 2014-10-23 2015-10-09 Device for fixing oscillatable a gas generator as a vibration damper mass within an airbag module

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EP15787453.8A Active EP3209525B1 (en) 2014-10-23 2015-10-09 Airbag module, diffuser for an airbag module and vehicle occupant safety system

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US (4) US10272871B2 (en)
EP (3) EP3483011B1 (en)
CN (3) CN107074183B (en)
DE (4) DE202014008432U1 (en)
WO (3) WO2016062378A1 (en)

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US10272871B2 (en) 2019-04-30
US20190389417A1 (en) 2019-12-26
EP3483011B1 (en) 2020-09-16
DE202014008432U1 (en) 2016-01-26
WO2016062377A1 (en) 2016-04-28
CN107074182B (en) 2020-02-07
WO2016062378A1 (en) 2016-04-28
WO2016062377A8 (en) 2016-06-23
US11235727B2 (en) 2022-02-01
EP3483011A1 (en) 2019-05-15
EP3209525B1 (en) 2018-09-26
US20170313275A1 (en) 2017-11-02
CN107074181B (en) 2020-06-16
WO2016062378A8 (en) 2016-06-23
US20180312128A1 (en) 2018-11-01
US20170369021A1 (en) 2017-12-28
US10513238B2 (en) 2019-12-24
CN107074181A (en) 2017-08-18
DE102015011098A1 (en) 2016-04-28
CN107074183A (en) 2017-08-18
DE102015011099A1 (en) 2016-04-28
US10369954B2 (en) 2019-08-06
CN107074183B (en) 2019-09-03
CN107074182A (en) 2017-08-18
EP3209526A1 (en) 2017-08-30
EP3209525A1 (en) 2017-08-30
DE102015011100A1 (en) 2016-04-28
WO2016062379A1 (en) 2016-04-28

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